Roan cattle are the heterozygous hybrids of a cross between a white individual and a red individual.If a roan bull were crossed with a red cow, their offspring would show which of the following ratios?
A)all roan
B)1 red: 2 roan: 1 white
C)1 red: 1 white
D)1 red: 1 roan
E)all red

Question

Quizplus · Accepted Answer

When a roan bull (Rr) is crossed with a red cow (rr), the offspring can have two possible genotypes: Rr or rr. Therefore, the offspring will either be roan (Rr) or red (rr), with a 1:1 ratio of red to roan. There will be no white offspring since white is a recessive trait that is masked in heterozygous individuals (Rr). Therefore, the correct ratio is 1 red: 1 roan.

Roan Cattle Are the Heterozygous Hybrids of a Cross Between